Join Colab and help shape a smarter, more connected city through real-time collaboration and community-driven decisions

With Colab, you take part in building a better city by reporting improvements, supporting decisions, answering public queries, and receiving direct feedback from your City Hall. Designed as a seamless bridge between citizens and government, Colab promotes transparency and civic engagement for a growing community of more than 450,000 users. It’s a powerful civic-tech platform that makes it easy to participate in surveys, consultations, and local initiatives.

Whether you want to report an issue, vote in a public decision, or complete missions that positively impact your neighborhood, Colab helps you engage anytime, anywhere. It’s ideal for residents looking to support smart city development, community problem-solving, and digital participation in public services.

Download the Colab app and discover how everyday actions can transform your city—and inspire others to join the movement.

• Collaborate with City Hall: Spot a broken trash can, fallen tree branch, or accumulated garbage? Take a photo, describe the issue, and publish it so your City Hall can respond directly through the app.
• Participate in decisions: Evaluate services, send suggestions, and join public consultations. Vote on year-end events or new bus lane routes right from your phone.
• Complete meaningful missions: Donate blood, check in at local health centers, report potential dengue hotspots, and earn points while helping your community thrive.
• Make a difference: Follow guided Journeys to learn how to be a more engaged citizen. Compare your progress with friends, neighbors, and people across Brazil in the community Ranking.
• Access regional services: Explore Colab features available in partner cities like Aracaju, Maceió, Niterói, Recife, Rio de Janeiro, Santo André, São Gonçalo, and many others across Brazil.